According to the cavity structure, it is classified into F-P cavity, ring cavity, loop reflector fiber cavity and "8" shaped cavity, DBR fiber laser, DFB fiber laser and so on.

A sensor is a detecting device that can sense the measured information and can transform the sensed information into an electrical signal or other required form of information output to meet the information transmission, processing, storage, and Requirements for display, recording and control.

Since the advent of optical fiber in the 1970s, with the development of laser technology, optical fiber has been proved to have a series of advantages in theory and practice. The application of optical fiber in the field of sensing technology has also received increasing attention.

The erbium-doped fiber amplifier (EDFA) is a medium that uses helium ions to achieve energy conversion. The energy amplification window has an operating wavelength window of 1 550 nm and a width of 50 am, which is consistent with the low loss window of the fiber. The energy injection window is 980 nm and 1 480 nm.

the first sensor optimized avalanche photodiodes for lidar sensors (lidar) and offers a range of silicon avalanche photodiode (apds), series 9, the near infrared (nir) wavelengths, especially at 905 nm, very high sensitivity. the apd of the series 9 has an internal amplification mechanism, a large dynamic range and a fast rise time and is therefore ideal for lidar systems for o...

The lasers are classified according to their structure: FP, DFB, DBR, QW, VCSEL FP: Fabry-Perot, DFB: distributed feedback, DBR: distributed Bragg reflector, QW: quantum well, VCSEL: vertical cavity surface reflected laser.

The II-VI‘s newly developed wide angle of incidence mirrors are specifically designed for LiDAR applications.

Since the iPhone X was introduced with the 3D sensing module, its core component VCSEL (Vertical Cavity Surface Emitter Laser) has been placed under the spotlight of the high-tech stage. Apple‘s strong support has made VCSEL a dazzling star in the technology world. Although VC laser is not a new technology, its birth dates back to the 1980s and commercialized as early as 1996.